2007 MERCEDES-BENZ S CLASS cooling

434 Controls in detailAutomatic climate controlRear passenger compartment adjust-able air vents
Rear center console air vents
1Left center air vent, adjustable
2Right center air vent, adjustable
3Thumbwheel for right center air vents
4Thumbwheel for left center air vents
Opening/closing air vents:
Turn thumbwheel3 or 4.Rear passenger compartment climate
control*
Automatic climate control panel, rear
i
Vehicles without rear passenger compart-
ment climate control*:
The temperature at the air vents for rear passen-
ger compartment1 and2 will be approxi-
mately the same as at the dashboard center air
vents.
Warning!
G
Follow the recommended settings for heat-
ing and cooling as given in the instructions
for the front climate control (
page 424).
Otherwise the windows could fog up, impair-
ing visibility for the driver and endangering
you and others.
i
At low outside temperatures or if you have
switched off the cooling function, you cannot
cool the rear passenger compartment.
Item
1
Temperature control, left
2
Air distribution, left
(automatic, manual)
3
Air volume (automatic, manual)
4
Mode selector
5
Air distribution, right
(automatic, manual)
6
Temperature control, right

497 Operation
Engine compartment
Example illustration from S 5501Filler cap
Unscrew filler cap1 from filler neck.

Add engine oil as required. Be careful
not to overfill with oil.
Be careful not to spill any oil when adding.
Avoid environmental damage caused by oil
entering the ground or water.

Screw filler cap1 back on filler neck.For more information on engine, see the
“Technical data” section (
page 661) and
(
page 663).
Transmission fluid level
The transmission fluid level does not need
to be checked. If you notice transmission
fluid loss or gear shifting malfunctions,
have an authorized Mercedes-Benz Center
check the automatic transmission.Active Body Control* (ABC*) fluid level
Regular fluid level check is not required. If
you notice fluid leaks or malfunction mes-
sages in the multifunction display, have an
authorized Mercedes-Benz Center check
the ABC-system.
Coolant level
The engine coolant is a mixture of water
and anticorrosion/antifreeze. To check
the coolant level, the vehicle must be
parked on level ground and the engine
must be cool.
!
Excess oil must be siphoned or drained off.
It will cause damage to the engine and catalytic
converter not covered by the Mercedes-Benz
Limited Warranty.
Warning!
G
In order to avoid any possibly serious burns:

Use extreme caution when opening the
hood if there are any signs of steam or
coolant leaking from the cooling system,
or if the coolant temperature gauge indi-
cates that the coolant is overheated.


Do not remove pressure cap on coolant
reservoir if coolant temperature is
above 158°F (70°C). Allow engine to
cool down before removing cap. The
coolant reservoir contains hot fluid and
is under pressure.


587 Practical hints
What to do if …?
Display
Possible cause/consequence
Possible solution
Coolant,
please refill
See Oper. Manual
The coolant level is too low.

Add coolant (
page 497).

If you have to add coolant frequently, have
the cooling system checked by an authorized
Mercedes-Benz Center.
Warning!
G
Do not spill antifreeze on hot engine parts.
Antifreeze contains ethylene glycol which
may burn if it comes into contact with hot
engine parts. You can be seriously burned.!
Do not ignore the low engine coolant level
warning. Extended driving with the message and
symbol displayed may cause serious engine
damage not covered by the Mercedes-Benz Lim-
ited Warranty.
Do not drive without a sufficient amount of cool-
ant in the cooling system. The engine will over-
heat, causing major engine damage.

590 Practical hintsWhat to do if …?Display
Possible cause/consequence
Possible solution
Coolant level
Stop vehicle!
Switch engine off

Restart the engine.
If this message disappears from the multi-
function display:
Drive immediately to the nearest autho-
rized Mercedes-Benz Center.
If this message does not disappear from the
multifunction display:

Call Roadside Assistance.
The cooling fan for the coolant is malfunc-
tioning.

Observe the coolant temperature gauge in
the instrument cluster (
page 28).

Have the fan replaced as soon as possible.
You are driving with one or more doors
open.
The display symbol shows you which doors
are open.

Close the doors.

662 Technical dataFuels, coolants, lubricants, etc.
Model
Capacity
Fuels, coolants, lubricants, etc.
Front wheel hubs
All models
approx. 2.1 oz. (60 g) each
High-temperature roller bearing
grease
Brake system
All models
approx. 0.53 US qt. (0.5 l)
MB Brake Fluid (DOT 4+)
Cooling
system
Vehicles without rear passenger
compartment climate control*
S 550
12.15 US qt. (11.5 l)
MB 325.0 Anticorrosion/Antifreeze
Vehicles with rear passenger
compartment climate control*
S 550
13.9 US qt. (13.15 l)
S 600
14.69 US qt. (13.9 l)
Low temperature cooling system
S 600
2.75 US qt. (2.6 l)
Fuel tank
All models
23.78 US gal (90.0 l)
Premium unleaded gasoline:
Minimum Posted Octane 91
(Avg.of96RON/86MON)
including a reserve of
All models
2.9 US gal (11.0 l)
Air conditioning system
All models
R-134a refrigerant and special PAG
lubricant oil (never R-12)
Windshield
washer
Vehicles with ABC*
All models
6.93 US qt (6.56 l)
MB Windshield Washer Concentrate
1
1Use MB Windshield Washer Concentrate “MB SummerFit” and water for temperatures above freezing or MB Windshield Washer Concentrate “MB SummerFit” and
commercially available premixed windshield washer solvent/antifreeze for temperatures below freezing point. Follow suggested mixing ratios (page 668).
Vehicles with Airmatic*
All models
6.76 US qt (6.4 l)

665 Technical data
Fuels, coolants, lubricants, etc.
Gasoline additives
A major concern among engine manufac-
turers is carbon build-up caused by gaso-
line. Mercedes-Benz recommends only the
use of quality gasoline containing additives
that prevent the build-up of carbon depos-
its.
After an extended period of using fuels
without such additives, carbon deposits
can build up especially on the intake valves
and in the combustion area, leading to en-
gine performance problems such as:

Warm-up hesitation


Unstable idle


Knocking/pinging


Misfire


Power lossIn areas where carbon deposits may be en-
countered due to lack of availability of gas-
olines which contains these additives,
Mercedes-Benz recommends the use of
additives approved by us for use on
Mercedes-Benz vehicles. Refer to Factory
Approved Service Products Pamphlet for a
listing of approved product(s). Follow di-
rections on product label.
Do not blend other fuel additives with fuel.
This only results in unnecessary cost and
may be harmful to the engine operation.
Damage or malfunction resulting from
poor fuel quality or from blending addition-
al fuel additives other than those tested
and approved by us for use on
Mercedes-Benz vehicles listed in the Fac-
tory Approved Service Products Pamphlet
are not covered by the Mercedes-Benz
Limited Warranty.
Coolants
The engine coolant is a mixture of water
and anticorrosion/antifreeze, which pro-
vides:

Corrosion protection


Freeze protection


Boiling protection (by increasing the
boiling point)
The cooling system was filled at the factory
with a coolant providing freeze protection
to approximately –22°F (–30°C) and cor-
rosion protection.
If the antifreeze mixture is effective to
–22°F (–30°C), the boiling point of the
coolant in the pressurized cooling system
is reached at approximately 266°F
(130°C).

666 Technical dataFuels, coolants, lubricants, etc.The coolant solution must be used
year-round to provide the necessary corro-
sion protection and increase boil-over pro-
tection. Refer to Maintenance Booklet for
replacement interval.
Coolant system design and coolant used
determine the replacement interval. The
replacement interval published in the
Maintenance Booklet is only applicable if
MB 325.0 anticorrosion/antifreeze solu-
tion or other Mercedes-Benz approved
products of equal specification (see
Factory Approved Service Products pam-
phlet) are used to renew the coolant con-
centration or bring it back up to the proper
level.
To provide important corrosion protection,
the solution must be at least 45% anticor-
rosion/antifreeze [equivalent to freeze
protection to approximately –22°F
(–30°C)]. If you use a solution that is more
than 55% anticorrosion/antifreeze [freeze
protection to approximately –49°F
(–45°C)], the engine temperature will in-
crease due to the lower heat transfer capa-bility of the solution. Therefore, do not use
more than this amount of anticorrosion/
antifreeze.
If the coolant level is low, water and
MB 325.0 Anticorrosion/Antifreeze
should be used to bring it up to the proper
level (have cooling system checked for
signs of leakage).
The water in the cooling system must meet
minimum requirements, which are usually
satisfied by normal drinking water. If you
are not sure about the water quality, con-
sult an authorized Mercedes-Benz Center.Anticorrosion/antifreeze
Your vehicle contains a number of alumi-
num parts. The use of aluminum compo-
nents in motor vehicle engines
necessitates that anticorrosion/antifreeze
coolant used in such engines be specifical-
ly formulated to protect the aluminum
parts. (Failure to use such anticorrosion/
antifreeze coolant will result in a signifi-
cantly shortened service life.)
Therefore, the following product is strongly
recommended for use in your vehicle:
Mercedes-Benz 325.0 anticorrosion/
antifreeze agent.
Before the start of the winter season (or
once a year in hot southern regions), you
should have the anticorrosion/antifreeze
concentration checked. The coolant is also
regularly checked each time you bring your
vehicle to an authorized Mercedes-Benz
Center for service.

667 Technical data
Fuels, coolants, lubricants, etc.
Anticorrosion/antifreeze quantityModel
Approx. freeze protection
– 35°F (– 37°C)
– 49°F (– 45°C)
S 550
Vehicles without rear passenger
compartment climate control*
6.08 US qt. (5.75 l)
6.71 US qt. (6.35 l)
Vehicles with rear passenger com-
partment climate control*
6.97 US qt. (6.60 l)
7.66 US qt. (7.25 l)
S 600 (main cooling system)
7.34 US qt. (6.95 l)
8.08 US qt. (7.65 l)
S 600 (low temperature cooling system)
1.37 US qt. (1.3 l)
1.51 US qt. (1.43 l)